JPH11162203A - Torch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To evaporate liquefied fuel while an evaporation tube is passed from a conduit and prevent discharge of the liquefied fuel not evaporated by arranging a coil-shaped evaporation tube positioned in the vicinity of an opening of a cylinder body and communicating with the conduit and an delivery preventive material in the vicinity of a jet nozzle at a tip end of a conduit, an jet part opening along an axial direction of the cylinder body toward the evaporation tube. SOLUTION: A liquefied fuel is evaporated while an evaporation tube 22 is passed from a conduit 20, and is jetted from a jet nozzle 23. The evaporated gas passes through a delivery preventive material 25 disposed at a cylindrical space part formed on the inside face of the evaporation tube 22 at a tip end of the jet nozzle 23, is discharged from an opening of an wind proof part 60, and is ignited by an ignition tool to form combustion flame. A fuel not evaporated is absorbed by the delivery preventive material 25, and is evaporated and combusted from an opening of the wind proof part 60 by transmission heat through a radiation heat of a combustion flame and the conduit 20, and the liquefied fuel is never discharged to the outside as is. The delivery preventive material 25 is preferably a steel wool, a glass wool, or a sponge-like sintered metal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torch using liquefied fuel, and more particularly to a torch that can use a combustion flame obtained by vaporizing and burning liquefied fuel, for example, for a torch relay.

[0002]

2. Description of the Related Art Torches for torch relays are known as torches held by torch runners in, for example, the Olympic Games and the national polity. The torch for torches is not limited to the above-mentioned competitions, but is also used for night torches at general sports days, games or event venues.

[0003] Conventionally, as a torch for a torch relay, there has been a torch using a powdery or solid flammable as a combustor (Japanese Utility Model Laid-Open No. 2-141901). However, with this torch for torch relays, combustion cannot be interrupted once it is ignited. Therefore, there is a problem that the combustion flame cannot be maintained for a predetermined time depending on the usage conditions, or the combustion cannot be interrupted in the middle and then restarted. there were.

In view of the above, instead of such a torch using a powdery or solid flame medicine for a combustion body, a torch equipped with a combustion device containing a liquefied gas in a container and containing the container in a cylindrical body has been developed. Began to be. These are presumed to utilize oil burning appliances or original burners such as oil burners and gas lighters. This conventional oil burning appliance or oil burner is disclosed in, for example,
Japanese Patent Application Laid-Open Nos. 096409 and 64-067514 are known.

[0005] These have a cylinder with a pressurizer, and kerosene, L
A liquid (liquefied) fuel such as P gas is accommodated in an oil tank (container), and a conduit connected to the container is formed in a coil-shaped vaporizing tube near the opening of the cylindrical body. It is configured to make a U-turn, and the injection nozzle at the end of this conduit is again directed to the vaporization pipe, and while the oil fuel in the container passes through the vaporization pipe from the conduit, the oil fuel is vaporized. The combustion flame of the vaporized gas from the injection nozzle heats the vaporization tube and continuously and reliably vaporizes the oil fuel.

[0006]

However, in order to inject the combustion flame with a considerable momentum, they are required to watch the vehicle while holding the cylinder of the combustion flame by hand while swaying the combustion flame. It was not possible to obtain a combustion flame to be used. Therefore, a conventional oil burning appliance or oil burner could not be diverted as a torch.

[0007] The inventor has prototyped a torch that can be burned in the same manner as a gas lighter without adding pressurized air to the liquefied fuel. This torch is composed of a fuel container containing a liquefied fuel of LPG, a handle for containing the fuel container, a conduit communicating with the fuel container, and a vaporization tube formed at the end of the conduit and wound in a coil shape. And a tubular body that covers the conduit and the vaporizing pipe and is fixed to the handle, and a windshield section fixed to the tip of the tubular body.

[0008] According to this torch, the liquefied fuel contained in the fuel container is sent in a liquid state to the vaporizing pipe constituting the combustion section via the conduit, and is surely vaporized during this transfer. After coming out, it mixes with air and ignites to burn and form a combustion flame while swaying from the tip of the windshield. However, this torch has a drawback that during use, the liquefied fuel cools down due to the heat of vaporization, making it difficult to gasify, thereby reducing the combustion flame.

In order to make up for this drawback, a mechanism for heating the fuel container with a heater or the like is required. This has the further disadvantage of being complex and costly. Also, even if the liquefied fuel passes through a flame that has already formed a combustion flame, the liquefied fuel is cooled by heat of vaporization (heat of vaporization),
There is a problem that the liquid is discharged without being vaporized.

Further, when the torch is inverted, there is a problem that liquefied fuel which is not vaporized drips out of the windshield. The present invention has been made to solve such a conventional problem, and its purpose is to liquefy the liquefied fuel as it is, vaporize the liquefied fuel while passing through the vaporization pipe from the conduit, and simultaneously discharge the liquefied fuel from the discharge nozzle of the conduit. An object of the present invention is to provide a torch in which a liquefied gas is not released as a liquefied fuel that is not vaporized and a combustion flame can be adjusted.

[0011]

According to a first aspect of the present invention, there is provided a torch having a handle for accommodating a fuel container having an on-off valve, a valve opening mechanism for opening the on-off valve of the fuel container, and an on-off valve for the fuel container. A conduit for guiding liquefied fuel in the fuel container when the valve is opened,
A cylindrical body that accommodates the conduit and has one end fixed to the handle, a connecting tool that connects the fuel container and the conduit and is fixed to the cylindrical body, a windshield provided at the other end opening of the cylindrical body, A coil-shaped vaporizing tube connected to the conduit and located near the other end opening of the cylindrical body, and a jetting portion formed at the distal end of the conduit and along the axial direction of the cylindrical body toward the vaporizing tube. A discharge nozzle that is disposed in close proximity to the discharge nozzle and that prevents discharge of liquefied fuel that is not vaporized and has a vaporization function.

A torch according to a second aspect is characterized in that, in the torch according to the first aspect, the discharge preventing material is filled in a cylindrical space formed on an inner surface of the vaporization tube.
According to a third aspect of the present invention, in the torch according to the first aspect, the discharge preventing material is provided in a cylindrical space formed by the inner side of the cylindrical body and the outer circumference of the conduit on the opposite side of the vaporizing tube near the ejection nozzle. It is characterized by being filled.

According to a fourth aspect of the present invention, there is provided a torch according to the first aspect, wherein the discharge preventing material is steel wool or glass wool. A torch according to a fifth aspect is the torch according to the first aspect, wherein the discharge preventing material is a spongy sintered metal.

(Function) In the torch according to any one of the first to fifth aspects, the liquefied fuel is discharged from the fuel container by the operation of the valve opening mechanism for interrupting the discharge of the liquefied fuel, and the liquefied fuel is discharged from the coiled vaporization pipe through the conduit. The liquid fuel is guided to the ejection nozzle at the tip, during which the liquefied fuel is vaporized to become a vaporized gas. And a discharge prevention material arranged in contact with or near the vaporization pipe so that the liquefied fuel from the ejection nozzle is not vaporized and discharged to the outside,
Absorbs liquefied fuel that does not become vaporized gas.

[0015] The igniter ignites the vaporized gas that has passed through the discharge preventing material from the ejection nozzle to form a combustion flame. Here, air is taken in from a gap in the upper peripheral wall of the windshield arranged at the upper opening of the cylindrical body, and becomes a combustion flame that can be visually recognized from the opening of the windshield. At this time, the liquefied fuel absorbed by the discharge preventing material becomes a vaporized gas by the radiant heat of the combustion flame and the heat of conduction to the conduit, and burns.

In the torch according to the fourth aspect, the steel wool or the glass wool absorbs the liquefied fuel discharged from the jet nozzle without being vaporized into the vaporized gas passing through the vaporizing tube. The liquefied fuel absorbed by the steel wool or the glass wool is vaporized by the radiant heat of the combustion flame from the ejection nozzle and the conduction heat to the conduit to form a combustion flame.

In the torch according to the fifth aspect, the sintered metal absorbs the liquefied fuel discharged from the ejection nozzle without being vaporized into the vaporized gas passing through the vaporization tube. The liquefied fuel absorbed by the sintered metal is vaporized by the radiant heat of the combustion flame from the ejection nozzle and the heat of conduction to the conduit to form a combustion flame.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show claims 1 to 5.
1 shows a torch according to one embodiment of the described invention. The torch according to the present embodiment includes a handle 1, a valve opening mechanism 16 of a fuel container 14, a conduit 20 for guiding liquefied fuel in the fuel container 14, a housing for accommodating the conduit 20, and one end fixed to the handle 1. Connecting the fuel container 14 and the conduit 20 and the connecting member 30 fixed to the cylindrical body 40.
A windshield section 60 provided at the other end opening of the cylindrical body 40, a coil-shaped vaporizing tube 22 connected to the conduit 20 and located near the other end opening of the cylindrical body 40, An ejection nozzle 2 formed at the tip and having an ejection portion opened toward the vaporization tube 22 along the axial direction of the cylinder 40.
3 and discharge prevention members 25 and 27 which are arranged in close proximity to the ejection nozzle 23 and prevent the discharge of the liquefied fuel which is not vaporized and have a vaporization function.

The handle 1 has a function of holding the torch according to the present embodiment by a user, accommodating the LPG fuel container 14 with an on-off valve therein, and supporting and fixing the cylindrical body 40. The handle 1 includes a cylindrical body 2 whose both ends are open, a partition member 5 formed on one end 3 side of the cylindrical body 2, and a conical section formed on the other end 4 side of the cylindrical body 2. 7
And a cylindrical body holding member 8 attached to the opening of the cone portion 7.

Cylinder 2, partition member 5 and cone 7
Is integrally formed of aluminum, stainless steel, hard resin, or the like. Inside the handle 1, a partition 11 forms a cavity 11 for accommodating an LPG fuel container 14 with an on-off valve. In the present embodiment, a commercially available lighter gas replenishment fuel (7
0 grams). An opening / closing valve device having a spring that opens with a load of about 1.3 kg is provided inside the base portion 15 of the fuel container 14, and this opening / closing valve device has a general spray can structure.

An adjusting screw 1 is provided substantially at the center of the partition member 5.
Two screw holes 6 are provided. In this screw hole 6,
An adjustment screw 12 is provided for moving the fuel container 14 forward and backward and discharging or interrupting liquefied fuel to the conduit 20. A pressing seat 13 that is in contact with the bottom of the fuel container 14 is attached to the tip of the adjusting screw 12. The partition member 5 and the adjustment screw 12 constitute a valve opening mechanism 16 of the fuel container 14. As will be described later, the base 15 of the fuel container 14 is connected to the connector 3 fixed to the handle 1.
Since the fuel container 14 is regulated by 0, the movement of the fuel container 14 corresponds to a distance enough to fill a gap between the partition member 5 and the connector 30. Therefore, when the adjusting screw 12 is screwed in the direction of the partition member 5 and the spring inside the base part 15 of the fuel container 14 is compressed to open the valve, the opening / closing valve of the fuel container 14 can be opened. it can.

The cylindrical holding member 8 is composed of a disc-shaped flange 9 having a diameter slightly smaller than the outer diameter of the cone portion 7 and a cylindrical connecting pipe 10 connected to the center of the flange 9. The flange 9 of the cylindrical body holding member 8 is fixed on the cone portion 7 by a screw 17. Connecting pipe 10 of cylinder holding member 8
Is fitted to the inner peripheral surface of the hollow portion 11 of the handle 1. Inside the connecting pipe 10, a circular metal fitting attached to the outside of the connecting tool 30 and fixed to the connecting tool 30 with screws 32 in order to hold a connecting tool 30 for connecting the fuel container 14 and the conduit 20. 31 are fitted.

Further, on the outer periphery of the metal fitting 31, a cylindrical body 4 is provided.
0 is formed with a hole 34 to be stopped by a screw 33.
By fitting the connecting member 30 into the cylindrical holding member 8
Is fixed to the connecting pipe 10. Holes 18 and 41 are formed in the connecting pipe 10 and the cylindrical body 40 at positions corresponding to the holes 34, respectively.

The connecting member 30 has a hollow portion through which liquefied fuel can flow, and fitting portions 35 and 36 are formed at both ends thereof to hold the conduit 20 and the thin tube 19 from the fuel container 14.

The cylinder 40 has a diameter of 30 mm and a length of 500 m.
m of a long cylindrical body made of stainless steel, and both ends are open. In the cylindrical body 40, a connecting member 30, a conduit 20 connected to the connecting member 30, a vaporizing tube 22 formed at a distal end of the conduit 20, and a discharge filled in contact with the vaporizing tube 22. The prevention members 25 and 27 are arranged.

Then, one side 41 of the cylindrical body 40 is inserted into the handle 1 and fixed. An annular upper frame 50 is attached to the other side 42 of the cylindrical body 40. A draft shield 60 is fixed between the upper frame 50 and the other side 42 of the cylindrical body 40. The upper frame 50 is a 35 mm-high aluminum cylinder, and the upper portion 52 has a larger diameter than the lower portion 51 and both ends are open. The inner diameter of the lower part 51 is made larger than the outer diameter of the other side 42 of the cylindrical body 40 so that the lower part 51 can be fitted to the cylindrical body 40.

The upper frame 50 is fixed to the cylinder 40 by applying a heat-resistant adhesive to the outer surface of the other side 42 of the cylinder 40,
This is achieved by inserting the upper frame 50 to the portion of the cylinder 40 where the adhesive is applied. The windshield section 60 has a diameter of 4 mmφ,
An aluminum round bar 61 having a length of 60 mm is formed by curving its upper portion 62 at an angle of 2 degrees, with the curved portions of the aluminum round bar 61 facing outward, and the circumference of the upper portion 51 of the upper frame 50. It is formed by placing it on top.

The upper frame 50 of the aluminum round bar 61
For fixing to the cylindrical body 40, a heat-resistant adhesive is applied to a portion of the aluminum round bar 61 that enters the upper frame 50, and one by one.
This is achieved by inserting adjacently in the gap between the outer circumference of the upper frame 50 and the inner circumference of the upper frame 50. The conduit 20 forms a vaporization tube 22 by winding the distal end portion into a coil shape (spiral shape) in a quadruple winding. Further, the distal end portion of the vaporization tube 22 is bent in the root direction of the conduit 20 and the ejection nozzle 23 is formed. The ejection portion 23a to be formed is bent in a substantially L shape so as to open toward the vaporization tube 22 along the axial direction of the cylinder 40.

The ejection portion 23a is formed by narrowing the mouth of the conduit 20 to the extent that the vaporized gas passes. The conduit 20 is formed of a 4 mm copper pipe cut to a predetermined length. In this embodiment, a copper tube is used, but an aluminum tube, a steel tube, or the like may be used.

A discharge preventing material 25 is packed in a cylindrical space 24 formed inside the vaporizing tube 22 with an appropriate hardness. A discharge preventing material 27 is packed with an appropriate hardness in a cylindrical space 26 formed between the outer periphery of the conduit 20 and the inner periphery of the cylindrical body 40 which has returned to the handle portion 1 by about 20 mm from the ejection nozzle 23. Have been.

As the discharge preventing members 25 and 27, a bundle of steel wires of the same degree as that of hair, which is sold as a metal scrubber, was used. The discharge preventing material 25 has an appropriate filling degree so as to absorb the liquefied fuel discharged from the ejection nozzle 23 and to make it easy for the vaporized gas to escape to the open upper portion (toward the windshield). In the present embodiment, the thickness of the discharge preventing material 25 is set to about 10 mm.

The discharge prevention member 27 is connected to the ejection nozzle 23
It is disposed between the outer periphery of the conduit 20 which has returned in the direction of the handle 1 by about 0 mm and the inner periphery of the cylindrical body 40. Depending on the discharge amount of the liquefied fuel, the amount of the liquefied fuel may exceed the allowable amount that can be received by the discharge prevention member 25 disposed in the cylindrical space 24 formed inside the vaporization pipe 22.
Can be absorbed by the discharge prevention member 27 located below the lower surface of the ink.

In this embodiment, the discharge preventing material 25,
Although steel wool is used for 27, similarly, glass wool or spongy sintered metal having heat resistance and a function of capillary action may be used. In addition, discharge prevention material 2
Although the case where both Nos. 5 and 27 are used has been described, either one of them can be used (claims 2 and 3).

In the case of one of the discharge preventing members 27,
It can be used so as to cover the tip of the ejection nozzle or to expose the tip of the ejection nozzle. next,
The assembling of the torch according to the present embodiment will be described. First, in a state where the cylinder holding member 8 of the handle 1 is detached, the cylinder 40 in which the connecting tool 30, the conduit 20, the vaporizing tube 22, and the windshield section 60 are disposed is attached to the cylinder holding member 8, The cylindrical body 40 and the conduit 20 are fixed from the outside of the holding member 8 with screws, and the thin tube 19 of the fuel container 14 and the connector 30 are joined. After that, the fuel container 14 is filled in the grip portion 1, the cylindrical body holding member 8 is attached to the cone portion 7 of the handle portion 1, and fixed with the screw 17. At this time, since the adjusting screw 12 has been lowered to the position where no addition is made, there is no leakage of the liquefied fuel.

This assembling method is merely an example, and the present invention is not limited to this. Next, the operation of the torch according to the present embodiment will be described. First, when the adjusting screw 12 is rotated, the fuel container 14 is pushed and moves to the connecting tool 30 side. At this time, the liquefied fuel is discharged from the narrow tube 19 of the fuel container 14 to the inside of the conduit 20 via the connector 30.

Then, the liquefied fuel passes through the vaporization tube 22 from the conduit 20 connected to the connecting member 30 and is ejected from the jet nozzle 23.
The gas is vaporized while being guided to the gas, and becomes a vaporized gas.
Erupts from This vaporized gas is supplied to the jet nozzle 23
At the end of the gasket, the gas passes through the discharge preventing material 25 arranged in the cylindrical space 24 formed on the inner surface of the vaporizing tube 22 and is discharged from the opening of the windshield section 60, where it is ignited (not shown).
It ignites and burns and becomes a combustion flame.

At this time, the liquefied fuel that has not been completely vaporized is absorbed by the discharge preventing material 25. This discharge prevention material 25
The liquefied fuel absorbed by the gasifier is vaporized by the radiant heat of the combustion flame burning from the opening of the windshield portion 60 and the conduction heat passing through the conduit 20, and is burned as a vaporized gas. Also, this ignited combustion flame
A certain amount of air is obtained from an air port formed in the peripheral wall of the windshield section 60 and continues to burn, and a suitable flame is blown from the widely opened opening of the windshield section 60.

The windshield section 60 surrounds the combustion flame together with the air introduction hole so that the combustion flame does not extinguish in a strong wind when used outside. Further, the vaporized gas is supplied to the discharge preventing material 2 disposed in a cylindrical space portion 24 formed on the inner surface of the vaporizing tube 22 at the tip of the ejection nozzle 23.
While passing through 5 and being released from the opening of the windshield section 60,
It is diffused by the discharge preventing material 25 and sufficiently mixed with air to form a good combustion flame.

Further, since the discharge prevention material 25 is red-heated by the combustion flame, even if the flame is extinguished by a strong wind or the like, the vaporized gas can touch the red-heated portion of the discharge prevention material 25 and burn again. . On the other hand, when it is desired to interrupt or extinguish the combustion flame, the adjusting screw 12 is rotated in the reverse
Release the load applied to. Thereby, the fuel container 1
The opening and closing valve is closed by a spring in the base part 15 of 4, the supply of the liquefied fuel is stopped, and the combustion flame extinguishes naturally.

When it is desired to generate the combustion flame again, the operation of rotating the adjusting screw 12 and generating the vaporized gas is performed as described above. Further, the replacement of the fuel container 14 is performed by removing the screw 17 for fixing the cylinder holding member 8, and then removing the cylinder 40, the conduit 20, and the windshield 60 together with the cylinder holding member 8 from the handle 1. 1, the fuel container 14 is taken out, a new fuel container 14 is inserted, the cylinder 40, the conduit 20, and the draft shield 60 are inserted into the handle 1 together with the cylinder holding member 8, and the cylinder holding member 8 is It is performed by fixing with.

As described above, according to the torch according to the present embodiment, the liquefied fuel from the fuel container 14 is vaporized while passing through the conduit 20 and passes through the discharge prevention material 25, so that the liquefied fuel is discharged as it is. Since the discharge prevention member 27 is disposed below the ejection nozzle 23, there is no danger of liquid dripping. In addition, it is easy to assemble and easy to carry.

By operating the adjusting screw 12, the combustion flame can be easily interrupted and continued. Further, it is easy to put the fuel container 14 in and out of the handle 1.

[0044]

As described above, the torch of the present invention is
The cylinder can be lifted by hand with the combustion flame directed upward, and the portability is good.

Further, even if the combustion flame is directed downward or laterally, it is possible to keep the predetermined combustion flame. Even if the liquefied fuel in the container is discharged as the liquefied fuel without being vaporized from the ejection nozzle, it is absorbed by the discharge prevention material, so there is no danger of dripping. Further, the liquefied fuel absorbed by the discharge preventing material can be vaporized by the radiant heat of the combustion flame and the heat of conduction to the conduit and burned as a vaporized gas, so that problems such as disappearance of the burnout and a reduction in the combustion flame can be solved.

Since the vaporized gas is diffused by the discharge preventing material disposed in front of the ejection nozzle, the gas can be sufficiently mixed with air to form a good combustion flame. Further, since the valve opening mechanism for interrupting the release from the fuel container to the conduit is provided, it can be interrupted even during use, and the combustion flame can be obtained again.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the torch of the present invention.

FIG. 2 is a diagram showing the appearance of the torch of FIG.

FIG. 3 is an enlarged view of a handle in FIG. 1;

FIG. 4 is an enlarged view of a discharge prevention material in FIG.

FIG. 5 is a plan view of the torch in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle part 5 Partition member 7 Cone part 8 Cylindrical body holding member 11 Cavity part 14 Fuel container 12 Adjustment screw 15 Base part 19 Narrow tube 20 Conduit 22 Vaporization tube 23 Ejection nozzle 23a Ejection part 25, 27 Discharge prevention material 30 Connector 40 cylinder Body 50 Upper frame 60 Windshield

Claims (5)

[Claims] 1. A handle for accommodating a fuel container with an on-off valve, a valve opening mechanism for opening the on-off valve of the fuel container, and guiding the liquefied fuel in the fuel container when the on-off valve of the fuel container is opened. A conduit for accommodating the conduit, one end of which is fixed to the handle portion, a connecting device for connecting the fuel container and the conduit and fixed to the cylinder, and a conduit provided at the other end opening of the cylinder. A windbreak section, a coil-shaped vaporizing pipe connected to the conduit and located near the other end opening of the cylindrical body, and a blowout section formed at the distal end of the conduit and having an ejection section facing the vaporizing pipe. A torch comprising: a discharge nozzle that opens along an axial direction; and a discharge prevention member that is disposed adjacent to the discharge nozzle and that prevents discharge of liquefied fuel that is not vaporized and that has a vaporization function. 2. The torch according to claim 1, wherein the discharge preventing material is filled in a cylindrical space formed on an inner surface of the vaporization tube. 3. The torch according to claim 1, wherein the discharge preventing material is filled in a cylindrical space formed by the inside of the cylinder and the outer periphery of the conduit on the opposite side of the vaporizing tube in the vicinity of the ejection nozzle. A torch characterized by being. 4. The torch according to claim 1, wherein the discharge preventing material is steel wool or glass wool. 5. The torch according to claim 1, wherein the discharge prevention member is a spongy sintered metal.